+ cryptodev_cache_ring_t *ring = &cet->cache_ring;
+ u16 head = ring->head;
+ u16 tail = ring->tail;
+ u16 n_cached = ((head == tail) && (ring->frames[head].f == 0)) ?
+ 0 :
+ ((head == tail) && (ring->frames[head].f != 0)) ?
+ (CRYPTODEV_CACHE_QUEUE_MASK + 1) :
+ (head > tail) ?
+ (head - tail) :
+ (CRYPTODEV_CACHE_QUEUE_MASK - tail + head);
+
+ u16 enq_head = ring->enq_head;
+ u16 deq_tail = ring->deq_tail;
+ u16 n_frames_inflight =
+ ((enq_head == deq_tail) && (ring->frames[enq_head].f == 0)) ?
+ 0 :
+ ((enq_head == deq_tail) && (ring->frames[enq_head].f != 0)) ?
+ CRYPTODEV_CACHE_QUEUE_MASK + 1 :
+ (enq_head > deq_tail) ?
+ (enq_head - deq_tail) :
+ (CRYPTODEV_CACHE_QUEUE_MASK - deq_tail + enq_head);
+
+ u16 n_frames_processed =
+ ((tail == deq_tail) && (ring->frames[deq_tail].f == 0)) ?
+ 0 :
+ ((tail == deq_tail) && (ring->frames[deq_tail].f != 0)) ?
+ (CRYPTODEV_CACHE_QUEUE_MASK + 1) :
+ (deq_tail > tail) ? (deq_tail - tail) :
+ (CRYPTODEV_CACHE_QUEUE_MASK - tail + deq_tail);
+